User's Manual

LE920 Hardware User Guide
1vv0301026 Rev.8 2015-01-03
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights
Reserved. Page 36 of 88
5. Power Supply
The power supply circuitry and board layout are a very important part in the full product
design and they strongly reflect on the overall product performance. Reading carefully the
requirements and the guidelines that follow will ensure a good and proper design.
5.1. Power Supply Requirements
The LE920 power requirements are:
Power Supply
Nominal Supply Voltage
3.8V
Max Supply Voltage
4.2V
Supply Voltage Range
3.3V– 4.2V
LE920 current consumption
Mode
Average(mA)
Mode Description
SWITCHED OFF
Module supplied but switched Off
Switched Off
40 uA
IDLE mode
Standby mode; no call in progress
AT+CFUN=1
WCDMA
16
Normal mode; full functionality of the module
GSM
19
LTE
20
AT+CFUN=4
10
Disabled TX and RX; modules is not registered on the
network
AT+CFUN=5
GSM
4.4
DRx2
3.3
DRx3
2.8
DRx4
2.5
DRx5
2.3
DRx6
2.1
DRx7
2.0
DRx8
1.9
DRx9
WCDMA
3.0
DRx6
2.2
DRx7
1.8
DRx8
1.4
DRx9
LTE
6.3
Paging cycle #32 frames (0.32 sec DRx cycle)
3.8
Paging cycle #64 frames (0.64 sec DRx cycle)